Plant Operator Selection System Practice Test 2025

plant operator selection system

The Plant Operator Selection System Test 2025 is a series of pre-employment tests that can be used to select candidates for power plant positions. These jobs include fossil, nuclear, and hydroelectric plants. The POSS test contains four components. It’s important to understand the different sections of this test before you take it.

Free POSS Practice Test Online


The POSS test is a critical part of the hiring process for Power Plant Operators. It assesses a number of skills that are essential for the role, and a strong performance can significantly improve your chances of being hired. It is also used to help identify potential training needs and promotion opportunities.

The POSS test is made up of four timed aptitude tests, commonly known as a battery, and lasts about two hours. It is administered by electric utility companies to determine whether a candidate is suitable for a position as a power plant operator. The test consists of the following sections:

There are 118 to 146 questions on the POSS test, and the question format varies depending on the version you take. It is important to practice with multiple versions of the POSS test to familiarize yourself with the question format and to improve your score. You should also take the practice tests frequently to understand where you are making mistakes and to improve your understanding of the material. Our POSS practice tests include detailed answer explanations, which can help you identify areas where you need to focus your study efforts.


The EEI POSS test is used by the Edison Electric Institute to assess candidates for systems operator, dispatcher and power-controller positions. It measures nine different capabilities and is typically administered after a shortlist of applicants has been selected. This pencil-and-paper based test can be taken at a pre-selected date and time. The cost to take the test varies between energy companies and is often included in the application process for an operational role.

The POSS test consists of five test batteries: Reading Comprehension, Mathematical Usage, Tables and Graphs, Mechanical Concepts, and Figural Reasoning. Each of these tests has specific time limits for answering questions. The Reading Comprehension test consists of 36 multiple-choice questions that are related to five passages. These passages are excerpts from power plant reference guides and manuals.

The Mathematical Usage test evaluates your ability to apply basic mathematical formulas, including algebra problems and formula conversion questions. The Tables and Graphs test measures your ability to use tables of information. The Mechanical Concepts test assesses your understanding of physical forces. Lastly, the Figural Reasoning test measures your ability to interpret three-dimensional figures. Passing the EEI POSS test requires thorough preparation. A study guide like the POSS Secrets Study Guide can help you improve your score.

edison plant operator selection system

POSS Test Pass Rate

As a modern job seeker, you’re probably used to having to undergo pre-employment screening tests. The Edison Electric Institute (EEI) has been helping its member companies with these tasks for decades, including with the Plant Operator Selection System Test (POSS). POSS is a timed aptitude test with multiple-choice questions, administered by power plants to applicants seeking operating positions in nuclear, hydropower, and fossil fuel power plants.

Passing the POSS exam requires excellent time management skills, as the testing company has strict time limits for each section. Veteran test takers agree that preparing thoroughly before taking the test is the best way to improve your chances of passing. Getting plenty of rest, eating well, and getting study time in are all great ways to help you prepare.

If you’re looking for an effective POSS study guide, consider checking out the POSS Secrets Study Guide. It offers practice test questions and detailed answer explanations. It also includes tips on how to improve your score. The guide will help you familiarize yourself with the POSS exam format and content, which will lower your anxiety and boost your confidence.

Plant Operator Selection System

Applicants for technical or supervisory positions at power utility companies that deal in nuclear, hydropower, or fossil fuel are often required to pass the Plant Operator Selection System test. This is an 80-minute multiple choice pencil and paper assessment that evaluates the cognitive skills needed for jobs like turbine, boiler, and control room operators. Passing POSS is a condition of employment but not a guarantee.

poss test

To improve your chances of passing the Plant Operator Selection System test, you need to prepare thoroughly. One way to do this is by using a study guide with practice questions. This guide will help you understand the different types of questions that are included in the test and what kind of answers are expected. It will also provide you with helpful tips and strategies for preparing for the exam.

Our study guide for the POSS is available as a printed book or as an ebook. Both formats include detailed answer explanations, so you can learn from your mistakes and improve your score. The ebook version is available immediately and doesn’t require any special software to download.

How To Pass the POSS MASS Test

If you’re applying for a position at a power plant, it’s likely you will need to pass the POSS mass test. This test has five different sections, and you must prepare well to ensure a high score. A good score can significantly improve your chances of getting the job. Unlike most other tests, the POSS does not have a minimum passing score. Instead, the scores are compiled and converted into an aptitude index that evaluates abilities associated with plant operating.

The test is divided into five sections, each with strict time limits. The first section, Assembling Objects, measures your ability to correctly assemble objects and devices. It contains 20 questions, which you must answer in 15 minutes. The next section, Mathematical Usage, is a seven-minute test with 18 multiple-choice questions. The final section, Mechanical Concepts, assesses your knowledge of physics within mechanical processes. It includes 36 multiple-choice questions based on five passages.

Preparation for the EEI POSS test can be challenging, but it’s possible to improve your score. The most important step is to practice as much as you can. Our offers free POSS mass test practice questions that include detailed answer explanations. This will help you understand why you missed a question and how to avoid making the same mistakes on your real exam.

plant operator selection system secrets

POSS MASS Test Study Guide

POSS, or Mass Test, is a type of aptitude test administered by the Edison Electric Institute (EEI). These tests assess applicants’ abilities in several areas that are related to plant operating. The test is typically administered in a multiple-choice format and has a set time limit for each section. It is essential to familiarize yourself with the format and practice time management skills to increase your chances of passing the test.

The Mass Test is composed of five different sections: a. Reading Comprehension: This section evaluates your ability to understand technical texts related to power plants. It includes questions that require you to identify the main ideas and supporting details of the text. Developing effective reading strategies and comprehension techniques can help you improve your score on this section. Mathematical Usage: This section assesses your skills in basic arithmetic, algebra, and geometry. It also tests your ability to solve word problems and formula conversions. You can prepare for this section by practicing basic math concepts, such as converting ounces to grams and feet to meters. Moreover, it is also important to learn how to use reference tables. Our study guide contains sample practice questions and detailed answer explanations, which will help you identify the areas that need more improvement.

EEI POSS MASS Test Results

If you are a welder, electrician, painter or steelworker working within the fossil fuel, hydroelectric or nuclear energy industries, you may be required to sit an EEI test. These tests are designed to assess your ability and aptitude for power plant positions. Depending on the industry, you might be required to take one or more EEI tests, including the MASS, SO/PD, TECH and CAST battery of tests.

The EEI MASS test measures your aptitude for maintenance-related jobs at power plants. It is a multiple choice exam, and it has four sections. The first section involves answering 16 questions in 17 minutes. The second section is an arithmetic exam, which requires you to solve arithmetic problems that use drawings and other visuals. The third section consists of answering 23 questions about power-plant operations. Finally, the fourth section involves reading and understanding passages of text in a standard power-plant reference manual.

In addition to practicing arithmetic questions, you should also work on your reading and comprehension skills before taking the MASS test. Many resources are available online, and you can find free EEI MASS practice tests and study guides. In the lead-up to your EEI test, try to answer as many sample questions as possible under actual test conditions. Doing so will help you understand the dynamics of the assessment, and you can better prepare for the test by answering questions under time constraints.

How Is the POSS Test Graded

The POSS test is scored on an aptitude index, which ranges from 0 to 15. This score determines whether or not you have the skills necessary for plant operations. It is important to note that the exact POSS passing score is not disclosed to candidates. This means that candidates do not have a minimum score to aim for and must instead focus on working towards the highest possible mark.

The test has two forms – long and short – and you will take the version that matches the role for which you are applying. Those applying for entry-level roles will usually take the short form, which contains 18 questions and must be completed in seven minutes. Those applying for supervisory roles and above will take the longer version, which contains 46 multiple-choice questions that must be answered in 17 minutes.

The mathematical usage section of the POSS test has questions that revolve around graphs and tables and include algebra problems, word problems, and formula conversion problems. The figural reasoning section requires you to answer 20 questions in 10 minutes. These questions feature line drawings of disassembled devices like levers, pulleys, gears, fulcrums, and ramps that you must then assemble.

Plant Operator Selection System
Questions and Answers

You must have a well-organized study strategy if you want to ace the POSS exam. Take into account the following actions when creating an efficient study plan:

  • Determine your strengths and weaknesses for each test component’s knowledge and skill requirements.
  • Spend time studying your areas of weakness while still going over your strong points.
  • Divide each section of the test into smaller themes, and design a study plan that covers every subject in a reasonable amount of time.
  • Prioritize measurable objectives for every study session, and keep a close eye on your development.
  • Incorporate frequent practice exams into your study schedule to monitor your progress and pinpoint areas that require additional attention.

Your overall score on the POSS will be based on how many questions you correctly answer. The score is calculated by adding the results from each part so that it may be evaluated on a scale from 0 to 15, with 15 representing a candidate’s high likelihood of success in the workplace. Remember that incorrect or unanswered questions will not result in a point deduction.

Yes. Results from POSS tests are recorded, transferrable to any utility, and valid for a number of years.

The test for mathematical usage comes in two different forms. Each evaluates a separate set of topics.

  • The initial Mathematical Usage test is designed to evaluate your proficiency with fundamental mathematical formulas. The test will begin with the distribution of these formulas.
  • The second Mathematical Usage exam measures your ability to solve equations for three different kinds of mathematical problems:
            – Algebra problems
            – Formula conversion problems
            – Word problems

Like other tests like the GED or Civil Service exam, the POSS cannot be taken whenever. Only an electric firm with an opportunity for an operating role will provide POSS testing. This is because the POSS evaluates each applicant’s skills as part of the employment process for the organization.

The Edison Energy Institute (EEI) created the Power Plant Maintenance Roles Selection System (MASS) examination to evaluate your aptitude and abilities in connection to power plant maintenance positions, such as those in fossil, hydroelectric, or nuclear power plants.